CN104858693A - Cam type self-centering clamp - Google Patents
Cam type self-centering clamp Download PDFInfo
- Publication number
- CN104858693A CN104858693A CN201410063024.1A CN201410063024A CN104858693A CN 104858693 A CN104858693 A CN 104858693A CN 201410063024 A CN201410063024 A CN 201410063024A CN 104858693 A CN104858693 A CN 104858693A
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- CN
- China
- Prior art keywords
- cam
- axle
- camshaft
- hole
- type self
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a cam type self-centering clamp. The cam type self-centering clamp comprises a mandrel, a cam shaft and an end cover, wherein a positioning step is arranged at one end of a positioning column of the mandrel, the outer circle of the mandrel is a positioning column surface, a step inner hole is formed in the positioning column surface of the mandrel, at least two groups of radial through holes are axially formed in the positioning column of the mandrel, three or four radial through holes of each group of radial through holes are uniformly distributed on the same cross section of the positioning column, positioning clamping columns are movably matched with and connected in the radial through holes, the cam shaft is movably matched with and connected in the step inner hole of the mandrel, the front end of the cam shaft and a front-end positioning guide hole in the step inner hole are in clearance fit connection, the rear end of the cam shaft and an inner hole of the end cover fixedly connected to the rear end of the positioning column are in clearance fit connection, outer cam columns corresponding to each group of radial through holes are arranged in the middle of the cam shaft, each outer cam column is formed by three or four cams uniformly distributed in the circumferential direction, and the column surface of each cam is contacted and connected with the bottom end of each positioning clamping column.
Description
Technical field
The present invention relates to a kind of thin-walled parts centralizer, particularly a kind of self-centering fixture of thin-walled parts.
Background technology
In machining, some workpiece are positioned by its endoporus and are clamped, and existing fixture or complicated structure, be exactly unload cumbersome, and order scarcely can realize self-centering, often can not satisfy condition requirement, causes machining accuracy poor.Therefore, Chinese invention patent application number: 201110286659.4, disclose a kind of self-centering fixture, axle is the cone of hollow, and the external diameter of nearly ring flange end is greater than the external diameter of ring flange end far away, the ring flange end far away of axle has one section of external screw thread, this section of external screw thread place is equipped with adjusting nut, the outer circumference of axle is arranged with a slidably baffle ring, axle is provided with a pair along the chute distributed in axle, the axle center of axle is hung with a pull bar, one end of pull bar and baffle ring are fixed by a pin, pin is through in a pair chute, and can slide along it, the other end of pull bar is fixed with a catch, the inwall of expansion set is the conicoid matched with the outer wall of axle, outer wall is column face, the nearly ring flange end of expansion set has the locating ring for axial location workpiece of circumference protrusion, expansion set axially offers multiple expansion joint being convenient to expand and shrink, expansion set is set between baffle ring and adjusting nut, when adjusting nut is to when the direction turn of described ring flange, the direction that expansion set increases to the external diameter of axle is moved and makes enlarged outside diameter, thus offset with the inwall of workpiece, when adjusting nut is to direction turn away from ring flange, the catch described in adjusting nut drives, by pull bar and baffle ring, makes expansion set move to the direction of the reduced diameter of described axle, the reduced diameter of expansion set and being separated with the inwall of workpiece.But this fixture is in the process of clamping thin-walled parts, easily thin-walled parts is caused to be out of shape.Particularly the distortion of thin-walled elongated workpieces is larger.
Summary of the invention
The present invention is the technical problem clamping machining deformation that will solve thin-walled elongated workpieces, provides a kind of cam-type self-centering fixture.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of cam-type self-centering fixture, comprise axle, camshaft, end cap, locating dowel one end of axle is provided with positioning step, axle cylindrical is location cylinder, an inner bore of step is provided with in the location cylinder of axle, the locating dowel of axle has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected location clamping column, in the inner bore of step of axle, activity is connected camshaft, camshaft front end is connected with the front end positioning guide hole matched in clearance of inner bore of step, camshaft rear end and the end cap endoporus activity be fixedly connected on locating dowel rear end are connected, the external cam post corresponding with often organizing radial direction through hole is provided with in the middle part of camshaft, each external cam post is by three or four-cam is circumferentially uniform forms, the cylinder of each cam contacts with the bottom of location clamping column and connects.
The locating dowel of axle is connected with thin-walled parts endoporus matched in clearance.End cap cylindrical is threaded end face clamp nut.Camshaft rear end is provided with hand rotation bar.
The invention has the beneficial effects as follows: structure is simple, workpiece easy to loading and unloading, and can self-centering be realized, after particularly employing location clamping column, in the process of clamping thin-walled elongated workpieces, thin-walled elongated workpieces deflection is little, and positioning precision is high, can ensure axiality and the perpendicularity of the thin-walled elongated workpieces after processing, and manually dwang is convenient to the handling of thin-walled elongated workpieces.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention;
Fig. 2 is the sectional view along A-A in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As Fig. 1, shown in 2, a kind of cam-type self-centering fixture, comprises axle 1, camshaft 2, location clamping column 3, end cap 4, end face clamp nut 5, hand rotation bar 6.
Locating dowel one end of axle 1 is provided with positioning step, axle 1 cylindrical is location cylinder, an inner bore of step is provided with in the location cylinder of axle 1, the locating dowel of axle 1 has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected location clamping column, in the inner bore of step of axle 1, activity is connected camshaft 2, camshaft 2 front end is connected with the front end positioning guide hole matched in clearance of inner bore of step, camshaft 2 rear end and the end cap 4 endoporus activity be fixedly connected on locating dowel rear end are connected, the external cam post corresponding with often organizing radial direction through hole is provided with in the middle part of camshaft 2, each external cam post is by three or four-cam is circumferentially uniform forms, the cylinder of each cam contacts with the bottom of location clamping column 3 and connects.
The locating dowel of axle 1 is connected with thin-walled parts 7 endoporus matched in clearance.End cap 4 cylindrical is threaded end face clamp nut 5.Camshaft 2 rear end is provided with hand rotation bar 6.
When camshaft 2 rotates along clockwise direction under the drive of hand rotation bar 6, location clamping column 3 outward direction on camshaft 2 moves, and the contact internal walls of its head and thin-walled parts 7 pushes against.
When camshaft 2 rotates in the counterclockwise direction under the drive of hand rotation bar 6, the location clamping column 3 on camshaft 2 moves inward and is separated with the inwall of thin-walled parts 7.
Claims (4)
1. a cam-type self-centering fixture, comprise axle (1), camshaft (2), end cap (4), it is characterized in that: locating dowel one end of described axle (1) is provided with positioning step, axle (1) cylindrical is location cylinder, an inner bore of step is provided with in the location cylinder of axle (1), the locating dowel of axle (1) has vertically at least two group radial direction through hole, often organize radial direction through hole on the same cross section of locating dowel, be evenly equipped with three or four radial direction through hole, in radial direction through hole, activity is connected and locates clamping column (3), in the inner bore of step of axle (1), activity is connected camshaft (2), camshaft (2) front end is connected with the front end positioning guide hole matched in clearance of inner bore of step, camshaft (2) rear end and end cap (4) the endoporus activity be fixedly connected on locating dowel rear end are connected, camshaft (2) middle part is provided with the external cam post corresponding with often organizing radial direction through hole, each external cam post is by three or four-cam is circumferentially uniform forms, the cylinder of each cam contacts with the bottom of location clamping column (3) and connects.
2. cam-type self-centering fixture according to claim 1, is characterized in that: the locating dowel of described axle (1) is connected with thin-walled parts (7) endoporus matched in clearance.
3. cam-type self-centering fixture according to claim 1, is characterized in that: described end cap (4) cylindrical is threaded end face clamp nut (5).
4. cam-type self-centering fixture according to claim 1, is characterized in that: described camshaft (2) rear end is provided with hand rotation bar (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063024.1A CN104858693A (en) | 2014-02-23 | 2014-02-23 | Cam type self-centering clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063024.1A CN104858693A (en) | 2014-02-23 | 2014-02-23 | Cam type self-centering clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104858693A true CN104858693A (en) | 2015-08-26 |
Family
ID=53905084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063024.1A Pending CN104858693A (en) | 2014-02-23 | 2014-02-23 | Cam type self-centering clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858693A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415048A (en) * | 2015-12-05 | 2016-03-23 | 重庆华洋单向器制造有限公司 | Turning clamp of one-way clutch sleeve |
| CN105728770A (en) * | 2016-03-30 | 2016-07-06 | 句容五星机械制造有限公司 | Clamp tool used for turning thin-wall cylindrical workpiece |
| CN105729197A (en) * | 2016-03-30 | 2016-07-06 | 句容五星机械制造有限公司 | Thin-wall tubular workpiece clam tool |
| CN108127497A (en) * | 2017-12-21 | 2018-06-08 | 合肥仨力机械制造有限公司 | One kind is drawn a circle the comprehensive grinding device in formula wheel hub end face |
| CN108161654A (en) * | 2017-12-21 | 2018-06-15 | 合肥仨力机械制造有限公司 | A kind of self-adjustable wheel hub end face automatically grinding device |
| CN111451701A (en) * | 2020-06-10 | 2020-07-28 | 贵州红湖发动机零部件有限公司 | Seamless tensioning welding fixture for welding conical cylinder |
| CN113059073A (en) * | 2021-03-29 | 2021-07-02 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
-
2014
- 2014-02-23 CN CN201410063024.1A patent/CN104858693A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415048A (en) * | 2015-12-05 | 2016-03-23 | 重庆华洋单向器制造有限公司 | Turning clamp of one-way clutch sleeve |
| CN105415048B (en) * | 2015-12-05 | 2018-01-30 | 重庆华洋单向器制造有限公司 | A kind of turning clamp of isolator sleeve pipe |
| CN105728770A (en) * | 2016-03-30 | 2016-07-06 | 句容五星机械制造有限公司 | Clamp tool used for turning thin-wall cylindrical workpiece |
| CN105729197A (en) * | 2016-03-30 | 2016-07-06 | 句容五星机械制造有限公司 | Thin-wall tubular workpiece clam tool |
| CN108127497A (en) * | 2017-12-21 | 2018-06-08 | 合肥仨力机械制造有限公司 | One kind is drawn a circle the comprehensive grinding device in formula wheel hub end face |
| CN108161654A (en) * | 2017-12-21 | 2018-06-15 | 合肥仨力机械制造有限公司 | A kind of self-adjustable wheel hub end face automatically grinding device |
| CN111451701A (en) * | 2020-06-10 | 2020-07-28 | 贵州红湖发动机零部件有限公司 | Seamless tensioning welding fixture for welding conical cylinder |
| CN111451701B (en) * | 2020-06-10 | 2022-05-03 | 贵州红湖发动机零部件有限公司 | Seamless tensioning welding fixture for welding conical cylinder |
| CN113059073A (en) * | 2021-03-29 | 2021-07-02 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
| CN113059073B (en) * | 2021-03-29 | 2022-03-11 | 浙江大学 | Inner centering mechanism for bending and forming flange large-diameter pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |